/*
 * (C) Copyright 2006-2010 Nuxeo SAS (http://nuxeo.com/) and contributors.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser General Public License
 * (LGPL) version 2.1 which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl.html
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * Contributors:
 *     bstefanescu
 */
package org.nuxeo.gwt.habyt.invocation.server;

import java.io.StringReader;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

import javax.servlet.ServletConfig;

/**
 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
 * 
 */
public class DefaultInvocationHandlerProvider implements
        InvocationHandlerProvider {

    protected Map<String, InvocationHandler> handlers = new HashMap<String, InvocationHandler>();

    public void init(ServletConfig config) throws Exception {
        handlers.put("file", new FileInvocationHandler());
        String text = config.getInitParameter("invocation-handlers");
        if (text != null) {
            Properties props = new Properties();
            StringReader reader = new StringReader(text);
            try {
                props.load(reader);
                for (Map.Entry<?, ?> entry : props.entrySet()) {
                    String cname = (String) entry.getValue();
                    handlers.put(
                            (String) entry.getKey(),
                            (InvocationHandler) Class.forName(cname).newInstance());

                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        for (InvocationHandler handler : handlers.values()) {
            handler.init(config);
        }
    }

    public InvocationHandler getHandler(String type) {
        return handlers.get(type);
    }

}
